Metallic car-bolster.



No. 825,034. PATENTED JULY 3, 1906.

. E. I. DODDS. METALLIC GAR BOLSTER. PPPPP (JATION FILLED AUG.23.1905.

SSSSSSSSSSSSS 1.

PATENTED JULY 3, 1906.

E. I. DODDS.

METALLIG'GAR BOLSTER.

APPLICATION FILED AUG.23. 1905.

2 SHEETSSHEET 2.

1n: NORRIS PETERS cm. wasmmrrou, u c.

UNITED STATES PATENT OFFICE.

ETHAN I. DODDS, OF PULLMAN, ILLINOIS, ASSIGNOR TO THE PULLMAN COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

METALLIC CAR-BOLSTER.

Specification of Letters Patent.

Patented July 3, 1906.

1'0 a whom it may concern:

Be it known that I, ETHAN I. Donns, a citizen of the United States, residing at Pullman, in the county of Cook and State of Illinois, have invented certain new and useful I'm-v provements in Metallic Car-B olsters, of which the following is a specification.

In order to construct a metallic car-bolster out of beams of standard size and shape and at the same time make a bolster with sides the equivalent of bellied plates, providing also for the use of a bottom plate tapering toward both ends, so that it will be proportioned to properly withstand the strains to which it may be subjected, I have invented the structure described below, which includes two side members of standard rolled beams which have attached to them at their central portions and preferably extending below their lower edges two comparatively short standard rolled bars, one for each side member. These downwardly-extended bars preferably have each an outwardly-projecting flange, and I rivet to these flanges and t0 the side members a tapered bottom plate.

In the accompanying drawings I have illustrated an embodiment of my invention, wherein Figure 1 illustrates a perspective view of a truck-bolster embodying my invention. Fig.

2 is a longitudinal vertical section of both the body and truck bolster, each constructed according to the principles of my invention. Fig. 3 is an enlarged end view of both bolsters shown in Fig. 2, and Fig. 4 is an enlar ed section on the line 4 4 of Fig. 2 as viewed in the direction indicated by the arrows.

The body-bolster comprises two side members 10 10, shown in the drawings as Z- beams; but my invention is intended to cover any form of standard rolled beams as the side members of the bolstersuch, for example, as channel-beams or angle-bars. 'To the upper outwardly-extended flanges 11 of Z-beams is riveted a top tension-plate 12, which extends substantially the full length of the bolster. Attached to the outer side of each side member 10, near its central portion and extending below the lower edge thereof, is an angle-bar 13 with its lower flange 14, projecting outwardly. By varying the amount by which these angle-bars extend below the side members I in effect change the depth of the said members. In this way I may use standard rolled beams as the side members and employ central angle or other bars of varying weights and sizes to make the bolster of the proper proportions to withstand the strains to which it may be subjected in the car in which it is to be employed.

A tapering bottom plate 15 is riveted at its broadest central portion to the outwardly extended flanges 14, and near its ends it is riveted to the inwardly-extended flanges 16 on the lower edge of the Z-beams 10. This bottom plate is not only tapered toward both ends, but it comprises a central horizontal portion, two intermediate inclined portions, and two horizontal end portions, as is clearly illustrated in Fig. 2. I employ at the ends of the bolster dish-shaped members 17, which are riveted to the Z-beams and which also have rivets passing through the flanges 1 6 and the bottom plate 15. At the central part of the bolster I provide a king-pin bearing member 18 with lugs 18 riveted to Z-beam side members, as shown in Fig. 2, and provided at .its central portion with a hollow boss 19,

through which the king-pin passes and is centered, as is shown in Fig. 4.

Attached to the lower side of bottom plate 15 at its central part is a center bearingplate 21 riveted to the bottom plate 15 and also to the flanges 14 of the angle-bars 13, the

' plates 15 and 21 having central perforations through which king-pin 20 passes.

The truck-bolster is similar to the bodybolster described above and comprises 2- beam members 21, a top plate 22, riveted to the upper outwardly-extended flanges 23 of the Zbeams, the central angle-bars 24, secured to the side members and in all respects similar to the angle-bars 13 of the body-bolster, with a bottom plate 25 riveted to the outwardly-extended flanges 26 of angle-bars 24. The truck-bolster is also supplied with a central bearing member 27 for the king-pin, like the member 18 of the body-bolster, the bottom plate 25 and top plate 22 each having a central perforation through which kingpin 20 passes. To the upper side of the top plate 22 is riveted, the rivets passing through the top plate 22 and the flanges 23 of the Z- beams, a central bearing-plate 28, cooperating with plate 21 of the body-bolster. As spacing means for the outer ends of the side members of the truck-bolster I use dishshaped members 29, the outer ones having their flanges extending outwardly and the inner ones having their flanges extending inwardly, the same being riveted to the side members of the bolster, the rivets passing also through the side guide-plates 30. Additional rivets secure these spacing members to the bottom plate and to the lower flanges of the Z-beams. The upper flanges of Z-beams are-cut away at the ends, as shown in Fig. 1, the flanges of each beam extending over only a portion of the length of the bolster, with the top plate 22 of corresponding length.

By changing the size and weight of the an gle or other bars riveted to the side members I am enabled to change the strength of the bolster and proportion it to successfully Withstand the strains which may be put upon it, using at the same time a minimum of metal, and by changing the amount by which the angle-bars overlap the side members I can change the depth of the bolster, thus varying its shape and also its strength.

My invention is not limited to the details of construction shown and described above, and I do not restrict myself to said details, except tothe extent to which they are made the subject-matter of specific claims.

This patent is intended to embrace only so much of the disclosure made herein as is covered by the claims.

I claim 1. A car-bolster comprising side members, each consisting of a standard rolled beam with a flange on its lower edge, and a bar riveted to each of said side members, each of said bars having a flange along its lower edge, substantially as described.

2. A car-bolster comprising side members, each consisting of a standard rolled beam, a standard rolled bar secured to each of said members, and a bottom plate fastened to said side members and to. said bars, substantially as described.

3. A car-bolster comprising side members,

each consisting of a standard rolled beam having a flange along its lower edge, a bar secured to each of said side members, each bar having a flange on its lower edge, and a bottom plate riveted to the flanges of said side members and of said bars, substantially as described.

1. A car-bolster comprising side members, each consisting of a standard rolled beam having a flange along its lower edge, a bar with an outwardly-extended flange riveted to each of said side members, and bottom plate riveted to the flanges of said side members and said bars, substantially as described.

5. A car-bolster comprising side members, each comprising a standard rolled beam with a flange along its lower edge, a bar with an outwardly-extended flange riveted to each of said side members, and a tapered bottom plate riveted to the flanges of said side members and said bars, substantially asdescribed.

6. A car-bolster comprising side members, each consisting of a standard rolled beam having a flange along its upperand lower edges, respectively, a bar with a flange along its lower edge riveted to each of said side members, and a bottom plate riveted to the lower flanges of said side members and said bars, substantially as described.

7. A car-bolster comprising side members, each with an integral flange along its upper edge and an integral flange along its lower edge, a barhaving an outwardly-extended flange along its lower edge riveted to each of said side members, and a tapered bottom plate riveted to the lower flanges of said side members and said bars, substantially as described.

8. A car-bolster comprising side members, each having an integral outwardly-extended flange along its upper edge, and an integral inwardlyextended flange along its lower edge, a bar with an outwardly-extended flange riveted to each of said side members, and a bottom plate riveted to the lower flanges of said side members and said bars, substantially as described.

9. A car-bolster comprising side members, each having an integral outwardly-extended flange along its upper edge, and an integral inwardly-extended .flange along its lower edge, a bar with an outwardlyextended flange along its lower edge, riveted to each of said side members, and a tapered bottom plate riveted to the lower flanges of said side members and said bars, substantially as described.

10. A car-bolster comprising side members, each consisting of a standard rolled beam and a standard rolled bar riveted to each of said side members and projecting below the lower edge thereof, substantially as described.

11. A car-bolster comprising side members, each consisting of a standard rolled beam, a standard rolled bar riveted toeach of said beams and projecting below the lower edges of said beams, and a bottom plate riveted to said side members and said'bars, substantially as described.

12. A car-bolster comprising side .members, each having a flange, a bar with an outwardly-extended flange riveted to each of said side members and projecting below the lower ed e thereof, and a bottom plate riveted to t e flanges of said side members and said bars, substantially as described.

13. A car-bolster comprising side members, each having an outwardlyextended flange along its upper edge, and an inwardlyextended flange along its lower edge, a bar with an outwardly-extended flange riveted to each of said side members and projecting below the lower edge thereof, and a bottom plate riveted tothe outwardlyextended flanges of said bars and to the inwardly-ex:

tended flanges of said side members, subl extended flange riveted to each of said side stantially as described. members and projecting below the lower edge 14. A car-bolster, comprising Z-beam side thereof, and a tapered bottom plate riveted members, an angle-bar with an outwardlyto the flanges of said angle-bars and to the I 5 extended flange riveted to each of said side lower flanges of said side members, substanmembers, and a bottom plate riveted to the I l tially as described. flanges of the angle-bars and to the lower flanges of the side members, substantially as ETHAN DODDS described. l/Vitnesses:

15. A car-bolster, comprising Z-beam side WALTER M. FULLER, members, an angle-bar with an outwardly- FREDERICK O. GoonwlN. 

